30540115402139 has 4 divisors (see below), whose sum is σ = 34902989031024. Its totient is φ = 26177241773256.

The previous prime is 30540115402127. The next prime is 30540115402219. The reversal of 30540115402139 is 93120451104503.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30540115402139 - 2¹² = 30540115398043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30540115402439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2181436814432 + ... + 2181436814445.

It is an arithmetic number, because the mean of its divisors is an integer number (8725747257756).

Almost surely, 2^{30540115402139} is an apocalyptic number.

30540115402139 is a deficient number, since it is larger than the sum of its proper divisors (4362873628885).

30540115402139 is an equidigital number, since it uses as much as digits as its factorization.

30540115402139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362873628884.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 30540115402139 in words is "thirty trillion, five hundred forty billion, one hundred fifteen million, four hundred two thousand, one hundred thirty-nine".